Tire-repair vulcanizing apparatus



' April 9, 1929. J COMBER 1,708,358

TIRE REPAIR VULCANIZING APPARATUS Filed Nov. 16, 1926 2 Sheets-Sheet 2 M6122 Urmz'ber- INVENTOR 'sTEMM A TTORNE Y Patented Apr. 9, 1929.

UhililED STATES PATENT OFFICE.

Jenn COMBEB, or AKRON, onto, essrouoa TD narrower. EQUIPMENT COMPANY, 01 AKRON, onto.

TEME-REPAIB VULCANIZING APPARATUS.

Application filed November 16, 1926. Serial No. 148,664.

This invention relates to new and novel improvements in vulcanizing apparatus for repairi pneumatic tire casings and has particular rci e ce to impmovemcin tire repair VHlCZUiiZn devices in which steam is generated by electricity.

Objects of the invention, broadly stated, are to pro *ide an elec cally operate l steam heated tire repair vulc. izing device of simple, durable construction which may be inanufactured at a low cost and which will be rapid and economical in ope ation.

A particular object is to provide an elec trically operated steam heated *e repair vulcanizing device which will proc ice steam and maintain the at a vuicanizing temperature with a minimum expenditure of electrical energy.

A further object is to provide tire vuloanizin stand having formed in the base thereof an electrically operated steam generating boiler whereby the vulcauizing apparatus carried by the st nd may be quickly and conveniently, econ inically heated and maintained at vulcanizing temperature.

An additional object to provide a highly efficient combined vulcanizing stand and steam generator which will be neat and attractive in mppearance and will occupy a minimum amount of space,

A still further object is to provide a combined vulcanizing stand and steam generator which is made up in great part of standard pipe whereby the sa' 'ie may be constructed at a low cost and may be quickly and conveniently taken apart for replacement or repair. I

Another object is to provide a tire vulcan-. izing stand. having detachably secured therein an electrically operated steam, generating boiler and to provide convenientmcans for detachably securing a heating elem t therein whereby the same may be tilllClilf, and conveniently removed and replaced when desired.

The above objects are accomplished and additional ends are attained by the novel construction, combination and arrangement of parts hereinafter described and illustrated in the accompanying drawing in which I have shown a preferred form of the invention, it being understood that the invention is capable of various adaptations and that changes and modifications may be made or T resort had to substitutions which come within the scope of the invention as set forth in the appended claims.

In the drawin s like characters of reference are used to designate like parts as the same may appear in any of the several views and in which Figure I is a vertical, sectional view taken as indicated by the lines 11 of Figure IV.

Figure II is a horizontal, sectional View taken as indicated by the lines IIII of Figure I.

Figure III is a side elevational view of a tire repair vulcanizing stand constructed in accordance with this invention.

l igure TV is a top plan View of same.

Figure V is a horizontal sectional View taken as indicated by the lines VV of Figure 1.

Figure V1 is a diagrammatic view of the electrical circuit employed in carrying Out the invention.

Procecdii now to a detailed description if i the invencon with particular reference to 'l e adaptations thereof disclosed in the awings, the numeral 1 is used to designate plate and the numeral 2 is a hollow cylincrical rip-right post. The post 2 is preferably composed of a. straight length of standard steel pipe and is threaded or otherwise secured in centrally arranged opening 3 in the base plate 1. The numeral l denotes a table which is suitably secured to the upper end of the post 2.

in the adaptation of the invention shown the table is rectangular in form and is provided with a centrally positioned opening 5 which is adapted to receive the post 2. The table 4- is provided on the under side thereof with a cylindrical flange 6 which doi'icls downwardl i from the walls of said opening 5 to form a collar in which the upper end of the pipe is snugly received. ll hile the collar 6 may be secured to the post 2 in any suitable manner, I have shown bolts 7 whi h are threaded in suitable bores in said collar 6 and entered in recesses which are formed in the exterior face of said post.

The numeral 8 denotes themain body of the steam boiler which is preferably formed of? a. section of pipe of smaller outside diameter than the interior diameter of the ps cp post 2. V The pipe 8 is provided at the lower opening 11 in which is secured a screw plug 10. The pipe 8 is provided on the upper end thereof with an outwardly projecting, circumferentially extending flange 12. The pipe or boiler 8 is covered with a layer 13 of asbestos or other material which is a nonconductor of heat. The boiler 8 is inserted in the cavity of the post 2 so as to depend downwardly therein with the flange 12 p0 sitioned against the upper face of the table a and is secured thereto by means'of the bolts 14 which are threaded in suitable bores which extend through the flange 12 and through the table 1. The boiler 8 is inter'iorly threaded at the *upper endthereof and an exteriorly threaded screw plug 15 is operatively positioned therein. The plug 15 1 is likewise provided with a centrally positioned bore 'inw'hich is received an upright pipe 16. The pipe 16 may be threaded, Welded or otherwise suitably secured in the plug 15. The pipe 1-6- projects i'lewnwardly into the boiler 8 with the outer wall thereof in spaced relation to theinner wall of the "boiler." The pipe 16 projects upwardlyfrom the upper face of the plu 15 and is closed point in close spaced relation to the bottom thereof. A like lJ-shapedtube 19 is also attached insuitable bores 1n the plug 17 and likewise projects downwardly into the boiler 8. Thetubel9 is substantiallyshorter than the tube 18 and is arranged witfl the axis of the loop at a right angle to the axis of the loop :on the tube 18. The loop portion of the tube 19 is thus positioned between the members of the loop formed by the pipe 18 at a'point adjacent the bottom thereof. The plug 17 is provided on the upper .face thereof with a cavity'2O which normally communicateswith the cavity of the tubes 18 and19. A heating element 21 its-positioned in each tube 18 so as to extend upwardly HI'GiLCll member of each loop in said Ipi-pe 18 at"a point intermediate length A like heating element 21 13 likewise mounted in thetube 19. The numeral 22-idenotes conductor wires which are operatively attached to the one terminal of each heating element and 21 and the characters 22 denote conductor wires attached to the other end of each terminal. Each of the wires 22 and 22 extend upwardly through the members of the tube 18 and 19 to the cavity 20. A three-way switch 23 is operativelysecured on the upper face of the plug 17 'whereby either ,or both of the of upright standards 25, one of which is secured to the table adgacent' each corner thereof. Each standard 25 is tubular and the lower end thereof is threaded on a T- pipc coupling 26. The plug 27 is threaded in the downwardly presented opening in each T-coupling 26. Each plug 27 extends downwardly through asuitable'bore in the table 1} and is secured to said table by means of a nut 28 which is threaded on the lower end of the plug 27 and operated to bear against the lower face of the table l.

The numerals 29 and 30 denote curing arms, one of which is positioned on the upwardly projecting ends of each pair of standards 25. ()ne of the'sta'ndards 25 is secured to each end of each of the arms 29 and 30 with the bore of the standard 25 communicating with the cavity of the arm. The numeral 81' den'otes'a pipe which is operatively secured in the horizontal opening in the T-fitting 26, in which is fitted the standard 25 whichleads to one end of one of said curing arms. The pipe 31 is also operatively secured in the T-member 2-6 which is secured to the standard 25 on the like end of the'other'arm 30. The pipe 2'1 is and which may be operatedto close the passage leading to each of said curing arms.

The numeral 35 denotes a pipe which ope atively connects the T-coupli-ng members 26 on the standard 25 which leads from the opposite ends of said arms. The pipe 35 is provided at a point intermediate its length with a- T-coupling member '36 which is operatively interposed therein and a return pipe 37 is operatively attached to said coupling. A suitable valve 34+ is interposed in the pipe 35 on each side of the coupling 36. A '5'- coupling 38 is secured to the other end of the pipe 37' and a pipe 39 is secured in said T-coupling so as to project downwardly a suitable opening in the table 1-. Apipe v38 is secured in an upwardly presented opening of the T-coupling 38.; A valve 38" is secured to the upper endof the pipe 38 and a filling tunnel 38 is secured to the upperend of the valve 38 A water glass 40 is secured to the lower end of the pipe 39 and is provided on the lower end thereof with a suitable elbow fitting 41 in which the horizontal pipe 42 is secured. The pipe 42 -is entered through the suitable opening in the wall of the post 2 and is threaded or otherwise secured in an opening in the wall of the boiler. It will be seen that the pipe 42 enters the boiler at a point below the normal water line in said boiler, so that water formed by the condensation of steam in each of the arms 29 and 30 will flow downwardly through the standards 25, the pipes 37 and 39, the Water glass 40 and the pipe 42 to the boiler.

A T-coupling 43 is operatively interposed in the pipe line 24 and an upright pipe 44 is operatively secured therein. The pipe 44 projects upwardly to a point above the arms 29 and 30 and a blowoff valve 45 is operativeiy secured to the upper end thereof. The pipe 44 is provided at a point intermediate its height with a T-coupling member 46 in which is operatively secureda pipe 47 which leads to a steam gauge 48. A pipe 44 is also provided at points adjacent the upper end thereof w'th outlet sockets 49 which are secured thereto and are operatively connected to a source of electrical energy. The sockets 49 are adapted to have conductor wires 50 plugged therein to provide electrical power for heating. The vulcanizing members 51 are arranged to contact with the exterior face of a tire positioned on the vi'ilcanizing arms 29 and 30 for applying a vulcanizing heat to patches or repairs from the exterior face of the tire. The steam gauge 48 is provided with an indicatii arm 52 which is arranged to contact with the arcuate strips 53 and 54. The arcuate strip 53 is connected by a conductor wire 56 to the conductorwire 22 which leads to one terminal of the heating element 21. The strip 54 is likewise connected by means of the wire 55 to the wire 22 leading to one terminal of the heating element 21. The other terminals 22 of each filament 21 and 21 are connected to a conductor -wire 57 which leads to one pole of a source of electrical power. A conductor wire 58 leads from the other pole of said source of electrical power to the indicator arm 52' It will be seen by reference to Figure VI that the two strips are secured to the gauge 48 in parallel spaced relation and that the indicator arm 52 is in contact with both of said strips when there is no pressure within the boiler and the free end of the arm 52 is positioned at O.' The strip 54 is substantially shorter than the strip 53 whereby the arm 52 will be moved out of contact with the strip when pressure within the boiler has reached a certain predetermined point.

In use, the desired quantity of water is placed in the boiler 8 and the wires 57 and 58 are operatively connected to a source of electrical power. The switch 23 is operated to connect both of the wires 55 and 56 with the conductor wires 22. As there is no pressure within the boiler, the indicator arm is positioned at 0. At this point the arm is in contact with both of the strips 53 and 54 and each filament 21 and 21 thus operatively connected to a source of electrical power. Heat from the elements 21 and 21 is transmitted through the walls of the tubes 18 and 19 to the water in the boiler. As the water becomes heated, steam is generated forming a pressure within the boiler; this moves the arm 52 upwardly in sliding contact with the strips and 54. \Vhen a certain predetermined pressure is reached, the hand 52 is moved beyond the strip 54 thus breaking the circuit between the strip 54 and the arm 52, and breaking the electrical circuit in which the heating element- 21 is interposed. As the circuit leading to the filament- 31 is still closed, the boiler continues to generate steam and the arm 52 is moved forwardly along the strip 53 until the pressure within the boiler has reached a certain predetermined point which is preferably at or slightly above a vulcanizing temperature. As the arm 52 is moved to a higher point it moves out of contact with the strip 53 and breaks the electrical circuit in which the filament 21 is interposed. The strips and may extend over any desired sector of the gauge 48 and any number of filaments 21 and 21 may likewise be connected to other strips sir larly associated with said gauge 48. When it is desired to use only one of the arms 29 and 30, the valves 33 and 34 are oper d to close the passages leading to one of sind arms. It will be seen that the valve 3;} and 34 may be operated to close the pas ige leading to both of said arms and that the plug 17 carrying the pipes 18 and 19 may be removed, repaired and replaced should it become necessary. It will also be seen that the pipes 24 and 42 may be quickly and eou veniently removed and the boiler removed from the post 2.

Having thus illustrated my inventii'an and described the same in detail, what i (i new and desire to secure by Letters Patent is 1. In a tire repair vulcanizing stand. a hollow post a supporting structure on the upper end of said post, said post projecting upwardly to the upper face of said supporting structure with the opening in the post accessible from the upper face of said supporting structure, a cylindrical boiler inserted in the cavity of said post; means to detachably secure said boiler to the supporting structure, a plurality of hollow vulcanizing arms mounted on said supporting structure, an outlet pipe leading from said hollow post, a supporting structure mountec on said, post with the post projecting upwardly to the upper face thereof and with the opening in the post accessible from the upper face of said supporting structure, a

. cylindrical boiler inserted in said post means to detachably secure said boiler to the supporting structure, a hollow vulcanizingarm mounted on said supporting structure, an outlet pipe leading from said boiler to said arm and a return pipe leading from said arm to said boiler, an electrically operatedimmersion heater do reliably secured in one of the axial walls of said boil- -er and projecting longitudinally therein,

' a steam gauge and means operated by said steam gauge for regulating said heater.

3. In a tire repair vulcanizingstand, a hollow cylindrical post, a supporting structure on the upper end of said post, said post provided with an open enc, a cylindrical boiler inserted in said open end means to detachably secure said boiler in said post, a plurality of hollow vulcanizing arms mounted on said supporting structure, an outlet pipe leading from said boiler to each of said arms and a return pipe leading from each of saidarins to said boiler, an elec trically operated immersion heater detachably secured in said boiler and means to 013- eratively' connect said heater toa source of electrical power.

4. In a device of the class described, a

base, a hollow post projecting: upwardly therefrom, a suppoitinr structure mounted in said post with the cavity of the post accessible from the upper face of said structure a tubular boiler inserted in said post, means to detachably secure said boiler therein; an electrically operated immersion heating element detachably secured in the upper wall of said boiler and projecting downwardlv therein, a hollow vulcanizing arm mounted on said supporting structure, a tube leading from the upper part of said boiler and operatively connected to said arm, a return tube leading from said arm to saidlboiler and means to operatively attach said heating element toa source of electrical power.

. 5; In a device of the class described, a tubular nest, a table on said post, tubular standards projecting upwardly from said table, a hollow .vulcaniz ng arm mounted on said standards with the bore of the standard in communication with the cavity of the arm, acylindrical boiler detachably secured atthe upper end of said post and projectingdownwardly thereima pipe secured in the upper end of said boiler, said pipe projecting downwardly therein in spaced relation to the wall thereof and projecting upwardly therefrom, said pipe pro-r leading from the other standard to said boiler.

6.- In a device of the class described, a tubular post, a supporting structure on said post, tubular standards projecting upwardly from said structure, a hollow vulcanizing arm mounted on said standards with the bores of the standards in communication with the cavity of the .arm,.a boiler detachably secured in the cavity of said post, a pipe secured in the upper end of said boiler, said pipe projecting therein in spaced relation to thewall thereof and projecting axially therefrom, said pipe provided atva point within the boiler and adjacent the outer end thereof with a plurality of openingspa plug detachably secured in the upper end of said pipe, a plurality of heating elements secured to said plug and projecting through said pipe into said boiler, a steam gauge operatively connected to said 'boiler and means associated with said steam gauge to selectively connect said heating-elements with .a source'of electrical energ. a tube leading from the upper portion of said pipe, said tube operatively connected to oneof said standardsand a return tube leading from the other standard of said boiler.

In testimonyvhereof I have hereunto set my hand. 7.

- JOHN CO MBER. 

